NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The measurement of critical dimensions of features on integrated circuits and photomasks is modeled as the comparison of the images of the test object and of a
There are a number of parameters used to characterize a measurement result for the purposes of specifying its value for the intended purpose. Precision
A description is given of the hearing aid testing done for the Department of Veterans Affairs. Emphasis is given to the determination of the insertion frequency
Satyandra K. Gupta, William Regli, D Nau, Li Zhang
This chapter describes a methodology for analyzing some of the manufacturability aspects of machined parts during the design stage of the product development